Nut-lock.



- No. 860,028.. 7 PATENTED JULY16,1907.-

D. R. HILLMAN.

NUT LOCK. APPLIOATIONI'ILEDLEO.11,1906.

VI'IIIIIIIIIIA Witnesses [/zvenfok DANIEL R. HILLMAN, OF LANESVILLE, lLLINOIS.

NUT-LOCK.

To all whom it may concern:

Be it known that I, DANIEL R. HILLMAN, a citizen of the United States, residing at Lanesville, in the county of Sangamon and State of Illinois, have invented a new and useful Nut-Lock, of which the following is such a full, clear, and exact description as will enable others skilled in the art to which it appertains to make and use my said invention.

The purpose of this invention is to provide in con nection with a bolt and a nut fitting thereon, a key block provided with a key adapted to prevent the turning of the nut and means for securing the key in the key block.

With these ends in view this invention comprises the structural features shown in the drawings and hereinafter particularly described and finally recited in the claim.

Referring to the drawings, in which similar reference numerals and letters designate like parts in the several views: Figure 1 is a side elevation of the nut lock and shows the prongs of the key contacting with two faces of the nut on the bolt; Fig. 2. is a side elevation of the nut lock and shows the prongs of the key in contact with one face of the nut; Fig 3. is a vertical transverse section on the line 3. 3. of Fig. 1; Fig. 4 is an axial section through the nut, key block and the key; Fig. 5. is a perspective view of the key block and key detached from the bolt.

The bolt 1.'has screw threads and the screw threaded part of the bolt has a transverse channel 1. The nut 2 is of the usual construction and has threads matching the threads on the bolt. The key block 3 has a central opening 3* provided with screw threads matching the threads of the bolt 1; and also has a channel or way 3 in which the key fits loosely.

The key 4 has members 4 parallel to each other and such a distance apart that when the key is in position on the bolt one of the members 4 will be chordal to the central opening 3 of the key block and will occupy the transverse channel 1 and the bolt will lie between the key members as shown in Figs. 3 and 4. The key 4 also has laterally projecting prongs 4* adapted to engage with the faces of the nut as shown in Figs. 1 and 2. The members 4 of the key have transverse holes 4 accommodating a pin 5.

Specification of Letters Patent.

Application filed December 11, 1906. Serial No-' 347,343.

Patented July 16, 1907.

When the key block is in position on the bolt and the key is in position within the key block, the edge of one of the members 4 will lie in the channel 1 of the bolt. The pin 5 inserted through the holes 4 through the members 4 will prevent the accidental or unintentional withdrawal of the key 4.

In practical use the nut will be screwed upon the bolt, the key block will then be screwed upon the bolt as close as it can come to the nut and leave the way through the key block in line with the transverse chan; nel 1. When thekey block has been placed in this position the key will be inserted through the'way of the key block and through the channel 1? of the bolt 1 and the prongs 4 of the key will be in contact with the face or faces of the nut according to-the relative position of the nut and the key block on the bolt, and when the parts are in this position the pin 5 will be inserted through the holes in the members of the key and will prevent displacement of the key. I

From the foregoing it will be seen that when the key block is in such position on the bolt that the key occupies the transverse channel across the bolt, no matter what the revoluble position of the bolt relative to the nut may be, one or more of the members 4 will be in contact with a face or faces of the nut 2 and the member 4 of the key 4 occupying the transverse channel 1 of the bolt will prevent turning of the key block and will also prevent stripping of the threads of the bolt and the prongs 45* will prevent turning of the nut.

Having fully described my invention what I claim as new and desire to secure by Letters Patent is:

The combination of a screw-threaded bolt having a transverse channel, a screw threaded nut fitting on the bolt, a block screwing onto the bolt and having a key-Way, a key fitting in the key-way of the block and adapted to fit in the transverse channel of the bolt and having projecting prongs adapted to engage the faces of the nut and means for securing the key in the key-way.

In witness whereof I have hereunto subscribed my name at Lanesville, Illinois this 24th day of November 1906.

0. A. MERKEL, WILLIAM E. FAIN.

'It is hereby certified that in Letters Patent No. 860,028, granted July 16, 1907', upon the application of Daniel R. Hillrnan, of Lanesville, Illinois, for an improvement in Nut-Locks, an error appears in the printed specification requiring correction, as follows: In line 39, the reference numeral 3 should read 3; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 2 0thday of August, A. D., 1907.

SEAL c. c. BILLINGS,

Acting Commissioner of Patents. 

